List Files in Directory to Array

Hi all... Is there any way of reading the contents of a directory into an array so I can generate a listing from it? I can't see a filesystem function for this, how about with ftp functions? Am looking around at the moment but would appreciate some help. I am looking to read each file in the directory into an array ie: $array_files[1] = "foo.jpg" $array_files[2] = "bar.jpg" etc... So I can then do a foreach and put them all in a drop down box to choose the image. Thanks in advance ;o) Bix